Improvement in sash-holders



GEORGE M. Mc-CONNEL Improvement in Sash Holders.

N@, 123,034 Patente i lari 23, 1872. v

PATENT OFFICE.

GEORGE M. MOOON N EL, OF J AGKSONV ILLE, ILLINOIS.

IMPROVEMENT IN SASH-HOLDERS.

Specification forming part of Letters Patent No. 123,034, dated January23, 1872.

Specification describing an Improved Sash- Stop, invented by GEORGE M.MoOoNNEL, of Jacksonville, in the county of Morgan and State ofIllinois.

This invention consists in the combination of a double cam faced withrubber, a square box, which receives the operatin g-shaft of said camand forms a means of attaching the cam and shaft together, and a springinterposed between one side of the said box and adjacent side of thecam, the whole arranged in a suitable shell or case to be attached to awindowcasing, and constituting a stop which is neat in appearance andnoiseless and very effective in its operation, and will not injure thesash to which it is applied.

Figure 1 in the accompanying drawing is a side view of my sash-stop,showing it applied to a window-casing. Fig. 2 is a similar view withpart of the shell removed; and Fig. 3 is a central horizontal section ofthe same.

Similar letters of reference indicate corresponding parts in all threefigures.

A is the metal shell or case, of semicircular form, similar to the shellof an ordinary window-pulley. It isrecessed into one of the jalnbs ofthe window-casing and secured by screws passing through its face-plate.B is the double cam, which is of elliptical form, made of metal and hasa facing, G, of rubber or other bind in g material. It has a rectangularslot formed in it, parallel with its minor axis, for the reception ofand to enableit to slide upon a square metal box, 0, through which theshaft 1) pass es, and which has formed on its ends journals 0!. a, whichare supported in hearings in the shell A. Between the said box and theouter side of the slot 12 a spiral spring, E, is interposed, it beingrecessed into the cam and thereby retained in place. This spring holdsthe cam out against the window-sash. The shaft D of the lock is squareand fits within the box 0, so that the latter is compelled to turn withit. The cam is also compelled to turn with the box 0. The shaft isprovided at its outer end with a crank, d, which is parallel with theslot b in the cam. By thus supporting the cam on the box instead ofdirectly supporting it on the operatingshaft the longitudinal adjustmentof the latter to suit window-casin gs of difi'erent thicknesses isprovided for. The shell, A with that side of the cam out which isoperated by the spring, is inserted into the face of the jamb and theshaft D through the outer side of the casing, which is provided with abearing-plate,

I, for its reception.

The cam, being kept ,in contact with the shaft by the spring E, iscaused to lock the sash in any position to which it may be adjusted forif it be moved in either direction the friction produced on the rubberface of the cam tends to draw it toward its longer or major axis, andthereby jam it and prevent the continued motion of the sash. To raise orlower the sash the crank is slightly turned up or down and held, therebykeeping the cam in such a position that the motion of the sash tends toforce the cam back and relieve itself of friction.

Claim.

The combination of the slotted cam B, square .box 0, spring E, and shaftD, the whole arranged and operating substantially as described, for thepurpose set forth.

GEORGE M. MGOONNEL. Witnesses:

G. D. MILLER, B. F. BEESLEY.

